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教学课件
鲁教英语(五四学制)七年级上册
Unit2 语法专项 ——现在进行时 & 一般现在时辨析
全解精讲+分层练习
1
1.掌握现在进行时定义、结构、动词 ing 变化规则
2.熟记一般现在时三单变化、句式结构
3.能根据标志词区分两种时态核心用法
4.掌握 but 连接两种时态的混合句式
学习目标
现在进行时・基础定义
名称:Present Continuous Tense
核心含义:此时此刻、当下正在发生的动作
单元场景:实时天气、此刻正在进行的户外活动
核心句式模板:主语 + am/is/are + V-ing
例句:It’s snowing outside. 外面正在下雪。
现在进行时 be 动词搭配规则
I 搭配 am
单数主语(he/she/it/ 单个人名 / 单数事物)搭配 is
复数主语(we/you/they/ 复数名词)搭配 are
示例:
I am walking. / She is running. / They are playing.
现在进行时标志性提示词
1.立刻提示:Look! / Listen!
2.时间词:now /right now /at the moment
判断技巧:看到以上词汇,优先使用现在进行时
语境判断:电话实时描述、现场天气播报
动词 V-ing 变化规则 1(常规 + 去 e)
1.一般动词直接加 - ing
play-playing;rain-raining
2.不发音字母 e 结尾,去 e 再加 - ing
make-making;take-taking
小练习:write→;dance→
动词 V-ing 变化规则 2(双写 + 特殊)
1.重读闭音节:辅 + 元 + 辅结尾,双写末尾辅音 + ing
run-running;swim-swimming
2.ie 结尾动词,变 ie 为 y 再加 - ing
lie-lying
小练习:sit→;lie→
现在进行时基础例句(天气场景)
1.Look! The wind is blowing hard.
看!外面风刮得很大。
2.It is raining heavily at the moment.
此刻雨下得很大。
3.We are making a snowman now.
我们现在正在堆雪人。
第二部分 一般现在时・基础定义
名称:Simple Present Tense
三大使用场景:
1.经常性、习惯性动作
2.客观事实、自然规律
3.固定季节常规天气
核心:描述常态,不强调 “此刻”
一般现在时动词使用规则
主语分两类,动词形式不同:
1.非三单主语(I/you/we/they/ 复数名词)→动词原形
2.三单主语(he/she/it/ 单数人名 / 单数事物)→动词 + s/es
否定、疑问句:借助助动词 do/does
一般现在时三单变化规则 1(基础)
1.普通动词直接加 s
rain-rains;play-plays
2.s/x/ch/sh/o 结尾,加 es
watch-watches;go-goes;wash-washes
一般现在时三单变化规则 2(y 结尾)
1.辅音字母 + y:变 y 为 i,再加 es
fly-flies;study-studies
2.元音字母 + y:直接加 s
stay-stays;play-plays
小练习:fly→;stay→
一般现在时标志性提示词
表习惯:usually /often/always /sometimes
表周期:every day /every week
表季节规律:in spring /in winter
例句:It often snows in winter.
冬天经常下雪。
一般现在时客观规律例句
1.The sun rises in the east.
太阳从东方升起。(自然规律)
2.It rains a lot in southern spring.
南方春天多雨。(季节常态)
3.I read books every rainy day.
每到雨天我都看书。(日常习惯)
两大时态核心对比表格(含义 + 标志)
对比项 现在进行时 一般现在时
动作 此刻正在发生 日常习惯 / 客观事实
标志词 now, Look, Listen usually, every, in + 季节
天气用法 It’s raining.(此刻下雨) It rains often.(经常下雨)
两大时态句式对比(同场景对照)
1.现在进行时(此刻)
They are flying kites now.
他们现在正在放风筝。
2.一般现在时(常态)
They often fly kites in spring.
他们春天经常放风筝。
重难点:两种时态混合句(but 连接)
句式逻辑:前半句讲常态(一般现在时),
but 转折讲此刻动作(现在进行时)
模板:主语 + usually + 动词原形 / 三单,
but 主语 + am/is/are+V-ing
混合时态例句
1.She usually stays home on rainy days, but she is walking outside now.
下雨天她通常在家,但她此刻正在外面散步。
2.We often play football, but we are making a snowman today.
我们经常踢足球,但今天我们在堆雪人。
时态判断小技巧
第一步:圈出句子时间标志词
第二步:判断动作是 “此刻” 还是 “常态”
第三步:匹配对应时态结构
易错提醒:tomorrow 表将来,不属于这两种时态
变形练习题
写出 V-ing 和三单形式:
1.blow 2. swim 3. fly
4. watch 5. make 6.go
7. read 8. sit 9. study
10. dance
blowing bllows
swimmingswims
flying
flies
watching
watches
makingmakes
going
goes
reading
reads
sitting
sits
studyingstudies
dancingdances
填空练习题
1.Listen! It_______________ (rain) outside.
2.He________________ (often play) basketball after school.
3.The sun_________ (go) down every evening.
4.Look! Kids_____________ (fly) kites in the park.
5.It_________ (snow) a lot in winter, but it_____________ (not snow) now.
is raining
often plays
goes
are flying
snows
isn’t snowing
6._________ you_________ (read) books at the moment?
7.My mom______________ (not like) windy days.
8.They usually_________ (walk), but today they___________ (ride) bikes.
9.The wind______________ (blow) hard every spring.
10.She______________ (stay) home when it rains now.
Are doing
doesn’t like
walk
are riding
blows
is staying
单项选择
1.—What’s the weather now? —It_________.
A. rain B. rains C.is raining
2.He_________ books every night, but now he_________ TV.
A. reads; watches B. reads; is watching C. is reading; watches
3._________ it often_________ in autumn?
A. Does; rain B. Is; raining C. Do; rain
4.Look! The boys_________ football.
A. play B. are playing C. plays
C
B
A
B
5.It_________ cold in winter here.
A. are B.is C. be
6.—Is he sleeping now? —No, he_________. He_________ every afternoon.
A. isn’t; reads B. doesn’t; reads C. isn’t; read
7.They_________ kites every spring.
A.flies B. are flying C. fly
8.The sky_________ clear today.
A. is B. are C. am
B
A
C
A
句型转换练习题
1.They usually fly kites in spring.(改为现在进行时,now)
2.It often rains in summer.(改为现在进行时,right now)
3.She is reading a book at home.(改为否定句)
4.He usually plays basketball on weekends.(一般疑问 + 否定回答)
5.They are swimming in the pool.(对划线 swimming 提问)
They are flying kites in the park now.
It is raining right now.
She isn’t reading a book at home.
—Does he usually play basketball on weekends?—No, he doesn’t.
What are they doing in the pool?
对话补全练习题
对话 1
A: How’s the weather there now?
B: It__________________ (snow). I__________________ (stay) indoors.
A: What do you usually do on snowy days?
B: I usually_________ (watch) cartoons and_________ (read) novels.
对话 2
A: Hi! What_________ you_________ (do) at the moment?
B: I__________________ (run) in the park.
A: Do you often_________ (run) here?
B: Yes, I_________ (come) here every morning.
is snowing
am staying
watch
read
are doing
am running
run
come
易错题总结 1
1.客观真理永远一般现在时,不用进行时
错误:The sun is rising every day.
正确:The sun rises every day.
2.Look/Listen 后面必须用现在进行时
易错题总结 2
1.三单疑问句用 does,后面动词变回原形
错误:Does he plays football?
正确:Does he play football?
2.but 连接时态不要混淆:常态在前,此刻动作在后
本节课整体知识总结
1.现在进行时:此刻动作,am/is/are+V-ing,标志 now/Look
2.一般现在时:习惯 / 客观事实,三单动词变形,标usually/every
3.混合句:usually + 一般现在时,but+now + 现在进行时
4.天气句型:It’s raining(当下)/ It rains(常态)
教学课件
Unit2 语法专项 ——现在进行时 & 一般现在时辨析
Thank you for listening!
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